/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/OnlinePurchaseInterface.h
Initiate the checkout process for purchasing offers via payment without receipts returned Recommended for use when the entitlement or receipt information of the purchase is not needed by the caller
void Checkout ( const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & UserId, const [FPurchaseCheckoutRequest](API\Plugins\OnlineSubsystem\Interfaces\FPurchaseCheckoutRequest) & CheckoutRequest, const [FOnPurchaseReceiptlessCheckoutComplete](API\Plugins\OnlineSubsystem\Interfaces\FOnPurchaseReceiptlessCheckoutCo-) & Delegate )